title: A simplified approach for computed tomography with an X-ray grating interferometer.
abstract: We present a simplified acquisition and processing method for X-ray grating interferometry computed tomography (CT). The proposed approach eliminates the need to scan the gratings, thus allowing for a faster CT acquisition compared to methods presently in use. The contrast in the reconstructed images can be expressed as a linear combination of the absorption and refraction within the sample. Experimental images of a test phantom made of known materials and a human bone-cartilage sample prove the correctness of the method and show very good agreement with the theory. The here proposed approach might be highly interesting in many fields where a reduced imaging acquisition time is requested and/or where the radiation dose delivered to the sample has to be kept low, such as, for example, in in-vivo imaging.
authors.affiliation: European Synchrotron Radiation Facility (ESRF), 6 rue Horowitz, 38043 Grenoble, France. diemoz@esrf.fr
authors.forename: P C
authors.initials: PC
authors.lastname: Diemoz
authors.forename: P
authors.initials: P
authors.lastname: Coan
authors.forename: I
authors.initials: I
authors.lastname: Zanette
authors.forename: A
authors.initials: A
authors.lastname: Bravin
authors.forename: S
authors.initials: S
authors.lastname: Lang
authors.forename: C
authors.initials: C
authors.lastname: Glaser
authors.forename: T
authors.initials: T
authors.lastname: Weitkamp
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D007368:Interferometry / Q000295:instrumentation*; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*; D014961:X-Ray Diffraction / Q000295:instrumentation*